26 Proceedings of the First Convention 



Dr. Felt : Do you want to know the greatest depth or at 

 the sides? 



Mr. Claflin : I want to know how small a depth and how 

 large a pond is a safe habitat for fish. 



Dr. Felt: My experience and so far as I know is, in some 

 places it ought to be two feet deep. 



Mr. Claflin: About how large? 



Dr. Felt: That would be governed very largely by con- 

 ditions. I suppose your idea of making the pond is to cover a 

 certain surface. It would be simply a question of having 

 fish enough, and not having too much to take care of the 

 supply of mosquito larvae. 



Mr. Claflin : Would not the sun kill them, being exposed 

 in a small place, four or five feet wide? 



Dr. Felt: I don't think so. I never had any experience 

 under just those conditions, but in a case of sun I don't think 

 it would — they like the sun. 



Mr. Claflin : Mr. Chairman and gentlemen, I thank you 

 for vour attention. 



Chairman : The Federal Government is also represented 

 here. Surgeon-General Wyman is represented by Surgeon 

 Preston H. Bailhache. I will call upon him. 



The Chairman then states that, owing to an important 

 engagement which must be met by him, he will have to leave' 

 the meeting at this time, and asks, if there be no objection on 

 the part of the company present, that Mr. G. Waldo Smith 

 take his place as presiding officer. 



There being no objection, Mr. Smith then took the chair. 



Surgeon Bailhache: I v/ish to say, in the first place, 

 that I was notified that I was to speak or write on the subject 

 of the work of the Army. Not belonging to the Army, I wrote 

 Mr. Weeks of the fact and told him that I would be glad to 

 write or say a few words about the extermination or exclusion 

 of mosquitoes from our dwellings or public institutions. I 

 will proceed to read a few lines about the subject I mention. 



The Surgeon then read the following paper: 



